#include <vector>

double Regression(double underly, std::vector<double> Strke,
		  std::vector<double> Time, std::vector<double> vols, std::vector<double>& Bs);
double
getVolatility(double k, double s, double t, double beta0, double beta1, double beta2);
double
getVariance(double k, double s, double t, double beta0, double beta1, double beta2);
double getForwardVolatility
(double k, double s, double t, double T, double beta0, double beta1, double beta2);

void printDebug(double beta0, double beta1, double beta2);
